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原标题:SQL : Varchar add space to the end of the text
  • 时间:2012-05-13 00:27:08
  •  标签:
  • sql
  • varchar

当我增加一栏(斜体)的内容时,我获得额外空间。 例如,如果我有一个表格<代码>Student with name varchar(10),我确实:

INSERT INTO Student (id,name) VALUES (1, student )
SELECT name FROM Student WHERE id=1

student[space][space]

我如何在不将类型改为<代码>text的情况下加以确定?

问题回答

大多数数据库产出都是按固定表格格式进行查询的结果。 要想看看哪一个扼杀真的开端和目的,你就有必要确定另一个特征。 这三种方式取决于数据库:

select  " +name+ " 
select  " ||name|| " 
select concat( " , name,  " )

也许你发现,这些空间是查询工具的手法。





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